[openssl-users] different encrypted text for the same plain text message

Short, Todd tshort at akamai.com
Thu Jul 28 15:23:41 UTC 2016

Rich Salz basically told this guy to read Wikipedia about cryptography… :)
-Todd Short
// tshort at akamai.com<mailto:tshort at akamai.com>
// "One if by land, two if by sea, three if by the Internet."

On Jul 28, 2016, at 11:15 AM, Benjamin Kaduk <bkaduk at akamai.com<mailto:bkaduk at akamai.com>> wrote:

There are several places where a per-connection random input is introduced, with a specific goal of making encryptions of the same plaintext produce different ciphertexts (as well as other benefits).  If a plaintext always produced the same ciphertext, then an attacker could make a dictionary of different observed ciphertexts and know when the same plaintext was being repeated, which violates the confidentiality property desired from the protocol.


On 07/28/2016 06:19 AM, R-D intern wrote:

I am using ECDSA-ECDHE-AES-SHA cipher suite for client -server security.I
tried understanding the mechanism handshake mechanism. What still quizzes me
is ; communication between a specific client -server for a specific session
generates different encrypted text for the same plain text message. What
leads  to this? Can anybody elaborate?
Please reply.
Thanks and regards,

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